Question 884345
Estimate: {{{30-6=24}}}
Exact:
{{{30+1/9-(6+1/6)=(30-6)+(1/9-1/6)}}}
{{{30+1/9-(6+1/6)=(24)+(2/18-3/18)}}}
{{{30+1/9-(6+1/6)=(24)+(-1/18)}}}
{{{30+1/9-(6+1/6)=23+18/18-1/18}}}
{{{30+1/9-(6+1/6)=23+17/18)}}}